Sorry if I confused- it would depend on whether the VFD control module is integral with the motor or not, depending on the manufacturer. And in fact one diagram I checked it was 12 wires. PJB, follow the line voltage wires feeding the unit. You will see the nuetrals (white) all on one block on the board and the power going through the door safety switch going to the board that powers the TX and blower via a relay on the board. I bet your blower leads are connected to HT, CL and one marked park? Park is the unused blower tap speed. A volt meter to nuetral or ground and one of these terminals will read 120VAC while operating. I'm not sure how Canada works but, in the US when we had Energy Star tax credits available, the furnace model must be listed on the official listing and install date within a certain time frame was required to get the VS blower credit. Merely converting, especially individually wouldnt count. FYI, there is one manufacturer, Nordyne that labels Maytag, Frigidaire, Westinghouse, Tappan, Kelvinator and a few others that had available and sold variable speed, complete slide in blower assemblies for field conversion. Nice concept for energy savings but did nothing for the heat inputs. My experience has been using both Trane and Carrier equipment energy comparison programs has shown that a VS blower operates at less than 25% of a standard comparably sized PSC blower motor. There was a time where every model A/H or furnace required a factory programmed and matched motor and module. What a headache for stocking parts distributors, which resulted in parts acquisition problems for techs in the past. That has gone away with simpler field programmable units. Below is a sequence of operation so, a proper ECM setup senses what the blower compartment is doing along with AC/Ht input/output. Merely driving the motor is not just the only thing that happens. VS units are capable of adjusting to airflow changes to maintain proper AC airflow and temp rise during heat. Here is a simple explanation on how the work from GE: The G.E. Electronically Commutated Motor (ECM) shown in figure 3 is different than previous generations of variable speed blower motors. This motor has all of the capabilities of previous ECM blower motors but it does not have to be pre-programmed at the factory. Instead the variable speed furnace control programs the ECM blower motor upon application of power to the ECM blower motor via the serial communication link between the variable speed furnace control and the ECM blower motor. This eliminates the need for a multitude of different ECM blower motors where each one is programmed for one specific furnace model. The ECM blower motor is energized with 115-vac whenever power is available at the variable speed furnace control, but operates only when the variable speed furnace control communicates the proper serial commands to the ECM blower motor at PL13. The ECM blower motor is first fed 115-vac power through the 5-pin connector PL14. The 115-vac power is then rectified to DC by a diode module. After rectification, the DC signal is electronically commutated and fed in sequential order to 3 stator windings. The frequency of commutation pulses determines motor speed. Setting up the desired airflow CFM for an ECM blower motor is done by setting the A/C or CF selections on the variable speed furnace control shown in figure 1. The ECM blower motor then delivers requested airflow CFM as defined by serial commands received from the variable speed furnace control. The ECM blower motor is configured via the variable speed furnace control to react to changes in system static pressures to maintain constant airflow CFM. The ECM blower motor delivers requested airflow CFM up to about 1.0 in.w.c. of static pressure for most airflow settings. The variable speed furnace control is pre-programmed and contains all the information relative to each furnace model for all modes of operation. Blower characteristics for each model (airflow CFM, torque, and speed versus static pressure) are known from laboratory testing. If any 3 characteristics are known, the fourth can be defined. The airflow CFM is known because of the A/C and CF selections, model plug, and the thermostat input signals on the variable speed furnace control. The variable speed furnace control then communicates the airflow CFM to the ECM blower motor. Torque is known by the ECM blower motor because it is directly related to armature current which is measured by the ECM blower motor control. Speed is measured from the generated back EMF by the ECM motor control. This information (airflow CFM, torque and speed) are entered into an expression which calculates torque from speed and airflow CFM numbers. If the calculation does not match stored blower characteristics, torque is adjusted every 0.8 seconds until agreement is reached. The ECM blower motor does not directly measure static pressure, but does react to changes in static pressure to maintain constant airflow CFM.

I roast vegetables very often in my small countertop oven and sometimes will put a piece of fish or chicken on the next shelf. Using the roasting trays that came with the oven I usually drizzle a bit of oil and spread it around the tray, then add quartered potatoes, yams, chunks of onion, garlic cloves, sliced red pepper and sprigs of thyme, drizzling all over with more oil and pepper. I'd roast a tray like this at about 375F for 20 to 30 minutes. If the yams or potatoes aren't quite done, then I'd do them another 10 minutes. I like everything to be cooked through and the potatoes or yams brown and crispy on the bottom side. If there's something else in the oven then I'd make it a little hotter and put the veggies in a few minutes later. This little oven has just a couple of heating coils, up and down and no convection but I'm always amazed that I can do so much with it. SharonCb

You should get the pump brand that matches your controller (s) this means pentair. You/we have no way of knowing how many GPM any setup will have until you put a flow meter on it or buy a pump with a flow meter in it (VF) so to benchmark calculations at this stage is rather meaningless. From my recent experience with a Jandy Epump I doubt you will be turning the pump less than 1100 RPM anyway 400 is just really really slow and isn't moving much water at all. with a drain at the bottom of an 8 ft pool youd have to work pretty hard to get trapped. Id split the main drain on a new build anyway. Sound like VS is in your future Davegvg

Was doing the routine weed trimming yesterday, and about half way through when I changed out the battery, I noticed when I pushed on the trigger it immediately goes to full throttle. There is no in between. It's either full throttle or off. It is hard to do the trimming in between my roses at full throttle and each time I take my finger off the trigger it turns off and auto feeds. Any ideas what is wrong and how to fix this? Thanks!